A darker comb makes sense since she's having the gasping. *I think* it could possibly mean she has a heart issue, but I'm not certain on that. Darker combs can also mean circulation issues.
To send a video it's easiest to upload it to YouTube and post the link here.
How is she doing now?
Any bubbly eyes? Swelling of the face?
Any yellow-ish material in her mouth?
How's her comb color look?
If possible a video would help.